KR20180125488A - Pre-assembled heatable media lines and pre-assembled heating elements - Google Patents

Abstract

The present invention relates to an ink jet recording head comprising at least one pipe-type and / or hose-type media line (2), at least one line connector (3, 4) arranged at the end of the line, - a pre-fabricated heatable media line (1) comprising an assembled heating element (5), said pre-assembled heating element (5) being arranged in at least one circuit Wherein at least one of the heating element portions (50, 51) comprises at least two heating element portions (50, 51, 58, 59) At least one of the at least one line connector (3, 4) and the at least one pipe-type and / or the at least one pipe connector (3, 4), for heating the at least one pipe- Extends over the hose type media line (2). At least one of the heating element portions (50, 51, 58, 59) comprises a plurality of twisted individual wires (151, 152, 59) of at least two different materials, 153, 154, 155, 156, 157).

Description

Pre-assembled heatable media lines and pre-assembled heating elements

The present invention relates to a pre-assembled heating element having at least one pipe-and / or hose-type media line, at least one line connector disposed at an end of the media line, and at least one pre- Wherein the heating element comprises two heating element parts, which are connected to at least one circuit, and at least one of the heating element parts is a pre-fabricated heat- In order to heat at least one portion of the line connector and the at least one pipe-and / or hose-type media line with pre-assembled heating elements for use in an assembled type heatable media line, And extends over at least a portion of one line connector and the at least one pipe- and / or hose-type media line.

Pre-assembled heatable media lines are known in the art, such as pre-assembled heating elements. This pre-assembled heatable media line includes at least one media line and at least one line connector disposed at one end of the media line, wherein the media line may be in the form of a pipe and / or a hose. The media lines usually include at least one wall that externally bounds an internal cavity or an internal line bore. The medium may flow through the inner hole of the medium line. Line connectors serve to connect at least two media lines, or to connect media lines to any unit.

In vehicles, in particular, these pre-assembled heatable media lines are provided for conveying media, i.e., liquid, in at least an aggregated state. The medium is usually conveyed through a pre-assembled heatable media line, which tends to freeze at fairly high ambient temperatures by relatively high freezing points, and as a result, the functionality of the vehicle may be damaged, for example, It can be interrupted. This is particularly the case in the case of water supply lines for windscreen cleaning systems, as is the case with pre-assembled heatable media lines that transport urea aqueous solutions as media used as NOx reaction additives for diesel engines, so-called SCR catalysts . A heating system is provided to prevent freezing of the media in the pre-assembled heatable media line at low temperatures, or to thaw the media that has already frozen in the pre-fabricated media line. It is a known technique to provide pre-assembled heating elements for the purpose of heating the media lines and / or the at least one line connector, wherein the pre-assembled heating element is wound around the outer surface of the media line and / Or disposed within the wall of the media line, for example, to allow heating of the medium flowing through the line hole disposed in at least one end of the media line and the inner hole of the media line.

Depending on the arrangement of the individual line connectors and the pre-assembled heatable media lines arranged at one end of the media line, various temperature conditions prevail, particularly in the vehicle, for example in the vicinity of the vehicle's engine or tank of the vehicle, There is thus a different heating requirement in the vicinity of the line connectors, especially in the pre-assembled heatable media lines. The low temperature end of the pre-assembled heatable media line will be found near the tank of the vehicle and the hot end will be found near the metering point of the injector, i. E., Near the exhaust system or engine So that the two line connectors of the pre-assembled heatable media line are advantageously provided with different power inputs. In areas that are warmer than the high temperature or ambient temperature where the pre-assembled heatable media lines are located, i.e., near the exhaust system or engine, usually already existing heat radiation flows through the pre-assembled heatable media line It is sufficient to heat the medium, i.e., it is sufficient to melt the medium, especially when the ambient temperature outside the vehicle is low. To achieve this, it is known in the art to provide different numbers of windings and / or different arrangements of heating elements in the two line connectors disposed at the ends of at least one media line. By providing different pitches for the heating elements and / or by providing different arrangement or management of the heating elements to the line connectors, for example, when the same number of heating elements are arranged in the two line connectors, The power input can vary. This is known in the art, for example from DE 10 2011 120 358 A1.

According to this prior art document, on the one hand, different heating elements can be provided for the two line connectors, and / or the heating elements can have different resistances in the areas of the two line connectors. Thus, different thermal requirements in the vicinity of the two line connectors of the pre-assembled heatable media line can be satisfied by different power inputs in the vicinity of the two line connectors. If, for example, there is a hot zone at one end of the pre-assembled heatable media line in the area of the metering point near the line connector, for example, the engine or the exhaust system, the DE 10 2011 120 358 A1, a heating element having a resistance lower than the other end of the line-connector, i.e. in the cold zone, for example at the other end of the line of the pre- Is used. Here, the second heating element has a relatively high resistance. A further variation of the heat input is further disclosed wherein heating elements extending along the media line with respect to one of the two line connectors are provided for the purpose of being placed in the line connector, Connector, and the third heating element is connected to the other two heating elements.

Furthermore, it is also disclosed that one or two heating elements can be arranged to heat the line connector directly into only one line connector.

Thus, the two line connectors of the pre-assembled heatable media line may have similar, identical or different requirements with regard to thermal requirements. In addition, the line connectors themselves may be designed in a very different manner with respect to their size and shape, and may be beveled or straightened. However, for the sake of cost savings, the change should be as small as possible. The resistance, or specific resistance, of the heating element is thus determined by a line connector with a ribbed structure on the outer surface of the line connector on which the heating element is disposed and a cross- Can be changed regardless of the specific design of the device. In order to save costs, the smallest possible number of heating elements or parts of the heating element must be provided; They extend along the media line and the line connector disposed at least at one end of the media line. Further, for the purpose of heating the medium line itself, usually the requirements such as the specific resistance of the heating element and its cross-sectional area are taken into consideration.

When arranging the heating element or heating element parts along the media line, their length can be adjusted by varying the pitch, i. E., As described in DE 10 2010 032 189 A1, By varying the number of turns that are rolled into one or more of the following. When the pitch is changed, if the pitch is too large, bending of the media line may occur, which may raise the heating element or the heating element part from the surface. If the pitch of the windings of the media line having at least one heating element or part of the heating element is too small, a longer heating element length or length of the heating element part is required than with a winding with a smaller pitch There is a problem that the cost rapidly increases. In the case of two heating element parts, they are arranged along the media line by winding, both of which need to be arranged in the media line at approximately the same winding pitch, in order to prevent crossing between the heating element parts during the winding process.

For reasons of cost, it is useful to design the heating element or the heating element portion so that the cross-sectional area thereof is as small as possible, but still provide a heating element that can be manufactured and for manufacturing reasons, for example, crimping, when providing a plurality of heating element parts to allow trouble-free connection of the heating element parts by shrinking or winding of the heating element parts, A roughly uniform cross-sectional area would be advantageous.

The basic purpose of the present invention is to provide heating element or heating element parts of the smallest possible cross-sectional area, as long as similar or identical diameter heating element parts can be connected, and at the same time, Assembly type heating element for use in pre-assembled heatable media lines and media lines, in which the heat requirement can be met particularly in the vicinity of the media line and at least one line connector.

According to the preamble of claim 1, in a pre-assembled heatable media line, at least one of the heating element portions is a mixed wire with a plurality of twisted individual wires of at least two different materials strand), the above object is accomplished. In a pre-assembled heating element for use in this pre-assembled heatable media line, the pre-assembled heating element comprises at least two series-connected heating element parts, at least one of the heating element parts Is achieved as a composite wire strand having a plurality of twisted individual wires of at least two different materials. Further improvements of the invention are defined in the dependent claims.

By this means, pre-assembled heatable media lines and pre-assembled heating elements for use in such pre-assembled heatable media lines are provided, wherein by the use of the composite wire strands, The selective adjustment or selection of the resistivity of the element portion becomes possible. By this means, the selective adjustment of the resistivity is freed for a predefinable minimum diameter of the heating element portion, or for a predefinable minimum cross-sectional area. By using at least one heating element portion configured as a composite wire strand having a plurality of twisted individual wires of at least two different materials, the desired resistivity of the heating element portion can be adjusted by the difference between these individual wires have. The resistivity depends on the material so that by selecting different materials for the individual wires of the composite wire strand, the resistivity of the heating element portion can be controlled. Since the resistance R of the heating element portion is a function of the resistivity p, the length l of the heating element portion and its cross-sectional area A, i.e. R = (rho xl) / A, The degree of freedom is created by the possibility of changing the resistivity of the heating element portion if the length and its cross-sectional area are predetermined and thus kept constant for that application. Thus, by varying the specific resistivity of the heating element portions by different selection of the materials of the individual wires, and thus by the heating element portions, to the one or more line connectors of the media line and the pre- Different types of heat requirements can be satisfied along the pre-assembled heatable media line.

This means that when a heating element known in the art is provided having only one heating wire made of a particular material, or a heating strand having a plurality of discrete wires all made from the same material, the one material has only one specific resistivity Because it has, it is impossible. The change is made possible only by selecting heating elements made of different materials or materials, or heating elements having heating strands with individual wires. However, this is possible at a high cost by storing a large number of heating elements, or heating element parts, each of different material.

By varying the material of the individual wires of the heating element portions, their resistivity can be adjusted. Thus, if a composite wire strand is provided, it is possible, depending on the specific needs of the application, that the heating element on the line connector at the first end of the pre- The design of the resistivity of the portion and the design of the resistivity of the heating element portion on the line connector at the second end of the pre-assembled heatable media line can be performed differently.

The composite wire strand advantageously comprises a plurality of discrete wires which are twisted around a core of high tensile strength or a support element of high tensile strength, at least one of which may be made of a copper-nickel alloy, At least one of the wires may be made of copper or a nickel-chromium alloy. Also, at least one of the twisted individual wires of the at least one heating element portion may be comprised of a copper-zinc alloy or a copper-tin alloy. These materials have proved to be particularly advantageous with respect to the selective control of the resistivity of the heating element part, i. E., The composite wire strand.

For example, one or more of the following materials may be used as a material for at least one of the composite wire strands, i. E. Individual wires of at least one heating element portion: a Cu having a resistivity of 0.0178? , CuNi2 having a resistivity of 0.10 OMEGmm2 / m, CuNi2 having a resistivity of 0.10 OMEGA mm2 / m, CuNi2 having a resistivity of 0.10 OMEGA mm2 / CuNi30Mn having a resistivity of 0.400 OMK < 2 > / m, CuNi44 having a resistivity of 0.490 OMK < 2 > / m, in each case, . In addition, NiCr3020 having a resistivity of 1.040? Mm2 / m (20 占 폚) can be used as a nickel-chromium alloy. The resistivity of the individual wires twisted together may differ from 0.008 to 0.74 Ω / mm 2 / m (20 ° C).

The support element of high tensile strength can be made of a plastic material, in particular a plastic profile. Suitable plastic materials are, for example, Kevlar ^® or Vectran ^® . In particular, the outer diameter of the support element of high tensile strength can coincide with the outer diameter of one of the (electrically) discrete wires of the composite wire strand twisted around the support element of high tensile strength.

However, one of the individual wires may also serve as a support element with a high tensile strength, so that the material of the support element of high tensile strength coincides with the material of one of the individual wires, in particular a metal or metal alloy.

Also, by using such a composite wire strand as the heating element portion, it is possible to use the same heating element portions in the match line with the line connector, thereby preventing any interruption in the transition area between the media line and the line connector, The cost for the heating element can also be kept as low as possible. Otherwise, the cost is increased due to the provision of a larger number of heating element parts. Thus, advantageously two or three heating element parts are provided, which are connected in series to form a pre-assembled heating element.

More advantageously, said at least one pipe-type and / or hose-type media line and said at least one line connector may be adaptively enclosed by said at least one heating element. This provides an external winding to the pipe lines of the pipe-type and / or hose-type media lines and at least one end thereof, and the transition area between the media lines and the line connector also uninterruptedly Means that one or both of the heating element portions are disposed within the transition area between the media line and the line connector without any change or interruption; Thus, no crimping point or other kind of contact is provided between the heating element portions within the transition region between the media line and the line connector.

More advantageously, the heating element comprises two or three heating element parts. Advantageously, therefore, only a small number of contacts or crimping points are provided along the heating element. Each end of the heating element portions may be shorted or connected to an electrical supply line for connecting a heating element comprised of serially connected heating element portions to a power source.

Advantageously, the two heating element parts connected together have a wire strand outer diameter of the same or similar outer diameter or cross-sectional area, in particular with a tolerance of +/- 0.05 mm. By using a composite wire strand, it is possible to provide the same or substantially the same cross-sectional area. By this means, it is possible to connect the two heating element parts, in particular by means of crimping, in particular preferably together. The individual wires themselves may have an outer diameter of 0.19 mm, for example, when six or seven twisted individual wires are provided, and when the twisted individual wires of 19 are provided, an outer diameter of 0.115 mm, When the wires are provided, they can have an outer diameter of 0.082 mm.

At least one heating element portion is inserted into the rib structure on the outer surface of the line connector to heat the medium flowing through the line connector so that the distance between the ribs into which at least one heating element portion is inserted or the distance between the ribs & The size of which already determines the maximum outer diameter of the heating element portion. Thus, the design of the outer diameter of the outer part of the heating element part is determined by the good heat input into the material of the line connector and the small amount of dispersion in the cross-sectional area of the heating element part. Good heating is usually made possible by using a heating element portion having a smaller outer diameter. Thus, for example, when a wire strand consisting of, in particular, seven separate wires, is provided for the heating element portion, the two heating element portions connected together can each have a minimum cross-sectional area of 0.15 mm < 2 >. Here, for example, in order to prevent undesired damage due to breakage or cracking of the heating element part when surrounding the heating element part around the at least one line connector connected to the medium line and the medium line, A low-cost solution is provided. Also, by providing a cross-sectional area of the heating element portion of at least 0.15 mm 2, good crimp quality is possible. The optimum range of the cross-sectional area of this heating element part lies between 0.17 and 0.37 mm 2, in particular between 0.17 and 0.23 mm 2. In particular, preferably the cross-sectional area of the heating element portion may be 0.20 mm 2, which provides a particularly high tensile strength and applicability of the heating element portion in this range, such as a good trade-off between ease of installation and low material usage Because. It has been found that a heating element portion having a cross-sectional area greater than 0.30 mm < 2 >, for example 0.37 mm < 2 > can not be advantageously applied due to increased material cost and large size. In particular, the cross-sectional area of 0.2 mm 2 means the cross-sectional area of the individual wires of the metal except for the insulation coating. The individual wires have a cross-sectional area of, for example, 0.015 mm < 2 >.

The composite wire strand may be formed of, for example, 6, 7, 19 or 37 discrete wires, and the modified embodiment with six discrete wires may be constructed or configured without a high tensile strength support element . The individual wires preferably have the same wire diameter. However, in principle, individual wires may have different wire diameters when advantageous in certain applications. It has proved to be particularly advantageous when at least one heating element portion constructed as a composite wire strand comprises seven twisted individual wires. Here, when the individual wires are twisted into at least one heating element portion, the resulting lay length is advantageously 6 to 15 mm, in particular 9 mm. Here, the twist length affects the resulting resistance, with an effect of 3%. At the outer surface, at least one heating element part advantageously has a protective coating, which is in particular made of plastic material. It can have a minimum wall thickness of 0.2 mm. .

The pipe-type and / or hose-type media lines and the at least one line connector are connected together by a form fit and / or a force fit, or together form a material bond. . At the outer surface, the pre-assembled heatable media line includes at least one insulating protective cover extending around the pipe line of the pipe-type and / or hose-type media line, in particular a cladding tube (e.g. a corrugated tube) cladding tube, and the one or more line connectors may be surrounded by at least one protective cap. The insulation effect is achieved by air trapped between the protective cover and the outer surface of the media line or between at least one line connector.

In a particularly preferred fixation of at least one pre-assembled heating element on a pipe-type and / or hose-type media line, in order to provide particularly good heating of the media line, at least one pre- At least one pre-assembled heating element and at least one pipe-type and / or hose-type media line with at least one pre-assembled heating element, The media line being secured to the at least one film element by at least partially wrapping the film element with the at least one pre-assembled heating element and the at least one film element, A more preferred embedding of the pre-assembled heating element and a better placement of the film element on the outer surface of the media line For example. By heating the media line with at least one pre-assembled heating element and at least one film element, the film element can be better shaped for a particular application and can be particularly curved. As a result of the applied heat, the at least one film element can be relaxed and retracted, which results in better embedding of the at least one heating element in the film element, and the outer surface of the media line between the turns of the at least one heating element Which may result in better placement of the film elements in the film. Film elements that shrink with the application of heat can be advantageously used. This makes it possible in particular to achieve a good fixation of at least one heating element on the medium line and a positioning of the heating element on the medium line and thus to enable a very good heat transfer from the heating element to the wall of the media line, Thus enabling particularly good heating of the medium flowing through the media line. The application of the at least one film element may be performed only partially. Particularly by partially enclosing the media lines, at least one heating element can be fixed well on the media line, even if the film element is partially applied on the pipe line of the pipe-type and / or hose-type media line Very good heat input to the wall of the media line can be achieved.

By providing a composite wire strand and winding a media line with at least one heating element into at least one film element, such as a PET film element, i.e. a film element made of polyethylene, a synergistic effect is possible. When using a transparent film material for at least one film element, it is possible to transmit the film element through different coloring of the heating elements to detect the heating elements, whereby the visual elements of the heating elements of different resistance through the film element from the outside Detection becomes possible.

Composite wire strands permit material savings by means of relatively small cross-sections, i. E. Relatively small cross-sectional areas, in particular. At the same time, this improves the contact of the film element to at least one heating element and the pipe line of the pipe-type and / or hose-type, i.e. to improve the adhesion of the film element to the heating element and the media line. The contact can be further improved by stretching, excessive stretching, or plastic deformation of the film element. Thus, the at least one film is advantageously stretched, and / or excessively stretched, and / or plastically deformed when wrapped around a media line having at least one heating element disposed in the media line.

Winding pipe-type and / or hose-type media lines with composite wire strands and at least one film element generally provides a relatively small diameter wound media line. Coating with a protective cover such as a corrugated tube has an air gap between the corrugated tube and the media line or an insulating foam such as Santoprene ^® and can be carried out with relatively little material use, For example, a protective cover of a small inner diameter can be provided, for example. This leads to a cost effective solution as well as various applicability, since the space requirement of the pre-assembled media line is relatively small.

Thus, it is conceivable that initially the pipe lines of the pipe-type and / or hose-type are wound in particular continuously with at least one heating element and then at least one adhesive tape, a fabric adhesive tape or a textile tape, and / Pre-assembly of the media lines is performed in that the film elements are wound. The tape and / or film element and the heating element (s) are rewound at the ends or ends so as to be able to provide pre-assembled media lines with at least one line connector at the ends. Then, pre-assembly with at least one line connector is performed, and the at least one line connector is connected to the end of the media line, for example by laser welding. If a conventional adhesive tape, textile tape, textile adhesive tape or the like having a tape material with an adhesive for the purpose of winding on a media line with at least one heating element is used instead of the film element, , A woven tape, or an adhesive for attaching the fabric adhesive tape, and an adhesive residue on the media line after the tape is rewound, by being rolled over the tape itself. The residue must be removed in a time-consuming manner, before the ends of the media line can be connected to the line connectors, especially before they can be welded. Thus, the above described use of at least one film element for fixing at least one heating element in the media line has proved to be particularly advantageous, since the disadvantages of the adhesive residue no longer occur.

Further descriptions of embodiments of the present invention will be described in more detail below with reference to the drawings.
Figure 1 shows an embodiment of a pre-assembled heatable medium of the present invention having two end connectors attached to a pipe type of media line and two series-connected heating element parts to form a pre- 1 shows a schematic view of a first embodiment of a line,
Figure 2 shows a schematic view of a second embodiment of a pre-assembled heatable media line of the present invention having two line connectors attached to the ends of a pipe-type media line and two heating element parts Give,
FIG. 3 shows two line connectors attached to the ends of a pipe-type media line and a pre-assembled heatable medium of the present invention having two heating element parts as a variation to the embodiment of FIG. Line of the third embodiment of the present invention,
Figure 4 illustrates a pre-assembly of the present invention having two line connectors attached to the ends of a pipe-type media line and two series-connected heating element parts for forming a pre- / RTI > shows a schematic view of a fourth embodiment of a type heatable media line,
Figure 5 shows two line connectors attached to the ends of a pipe-type media line and four heating element portions, two of which extend along a pipe-type media line, The heating element portion in each case shows a schematic view of a fifth embodiment of the pre-assembled heatable media line of the present invention extending into each of the line connectors,
Figure 6 shows two line connectors attached to the ends of a pipe-type media line and three heating element portions, one of the heating element portions extending into one line connector, And the third shows a schematic view of a sixth embodiment of the pre-assembled heatable media line of the present invention extending along a pipe-type media line and along a second line connector Give,
7 shows a cross-sectional view through a media line of the present invention with a pre-assembled heating element having a relatively small outer diameter disposed in the media line,
Figure 8 shows a cross-sectional view through a media line of the present invention with a pre-assembled heating element having a relatively large outer diameter disposed in the media line,
Figure 9 shows a cross-sectional view through the line connector of the present invention with pre-assembled heating elements disposed between the outer surface ribs,
Figure 10 shows two line connectors attached to the ends of a pipe-type media line and a pre-assembled heatable media of the present invention having two heating element parts as an alternative to the embodiment of Figure 4, Lt; RTI ID = 0.0 > 7 < / RTI >
Fig. 11 shows a cross-sectional view of an embodiment of the present invention showing two line connectors attached to the ends of a pipe-type media line and four heating element portions, two of which extend along a pipe- Assembled type heatable medium line of the present invention, wherein one heating element portion extends to each of the line connectors,
Figure 12 shows two line connectors attached to the ends of a pipe-type media line and two heating element parts, one heating element part being connected to a pipe-type media line and a part of one line connector And the other heating element portion extends to the other line connector, and the other heating element portion extends to the other line connector,
Figure 13 shows a side detail view of seven twisted individual wires of a heating element portion of the present invention designed as a composite wire strand,
Figure 14 shows a cross-sectional view through a heating element portion of the present invention designed as a composite wire strand, as in Figure 13, comprising seven individual wires twisted together around a support element of high tensile strength,
Figure 15 shows a schematic view of a pipe- or hose-type media line with two heating elements arranged to wrap around the media line,
Figure 16 shows a schematic view of a media line with two heating elements as shown in Figure 15 in which the media line is partially surrounded by film elements for the purpose of securing the heating elements to the media line.

Figure 1 shows a pre-fabricated heatable media line 2 having pipe-type media lines 2 and line connectors 3, 4 attached to the ends of the media lines 2, line (1). The connection of the pipe-type media line 2 and the two line connectors 3 and 4 is carried out as a form fit and / or a force fit or as a material bond. . Instead of a pipe-type media line 2, a hose-type media line may also be provided. It is also possible for the media line to be a pipe-type and / or hose-type having at least one pipe-type part and at least one hose-type part.

The pre-assembled heating element 5 is extended along the media line 1, which is formed according to FIG. 1 as two series-connected heating element parts 50 and 51, (52). The heating element portion 50 is arranged in a transition region (not shown) from the pipe-type media line 2 to the second line connector 4 onto the first line connector 3 along the pipe- transition region (21). The second heating element portion 51 is also transferred onto the second line connector 4 along the pipe-type media line 2 and between the pipe-type media line 2 and the first line connector 3 And extends into the region 20. The contact 52 is disposed in the second line connector 4 such that the heating element portion 50 extends to the second line connector 4. [ In the first line connector 3, the two ends 53, 54 of the two heating element portions 50, 51 are connected to the electric supply lines 6, 7 by crimping, So that the connection to the electric power supply can be made, so that heating becomes possible. Thus, no connection point is provided for the two transition regions 20, 21 between the pipe-type media line 2 and the two line connectors 3, 4, Element portions may be provided, which lowers the cost of pre-assembled heatable media lines as compared to prior art solutions.

The two heating element portions 50, 51 are each formed as a composite wire strand. This means that the two heating element portions 50, 51 are formed of a plurality of twisted individual wires and are composed of at least two different materials with different resistivities. One example of such a composite wire strand in the form of the heating element portion 50 is shown in cross-section in Fig. 14 and shown in detail in Fig. In this example, the seven individual wires 151, 152, 153, 154, 155, 156 and 157 are twisted around a high tensile strength support element, or core 150 of high tensile strength. The lay length (l s) of the twisted individual wires may be, for example, 6 to 15 mm, in particular 9 mm (see Fig. 13). As shown in FIGS. 13 and 14, the twisted composite of the individual wires is usually surrounded by a protective sheath 158 on its outer surface.

The protective coating is particularly made of a plastic material. By providing such composite wire strands for the heating element portions 50, 51, they can be optimally adapted to specific ambient temperature conditions. If, for example, the area of the pre-assembled heatable medium line 1 in which the first line connector 3 is disposed is located in a high temperature zone in the vehicle, that is to say in the vicinity of the exhaust system or the engine , And low heat output is required. On the other hand, if the area opposite to the pre-assembled heatable medium line 1 including the second line connector 4 is disposed in a low-temperature zone of the vehicle, for example, near the vehicle tank, A higher heat output is required. This is because the heat output can be adjusted by suitably selecting the materials of the individual wires of the heating element portions 50, 51 in terms of total resistivity, since R = (rho * l) / A, where R is the resistance, p is the resistivity, l is the length of the heating element portion, and A is the cross-sectional area of the heating element portion. Thus, overheating in the high temperature zone and insufficient defrosting or defrosting in the low temperature zone can be prevented.

Figure 2 shows a schematic view of a second embodiment of a pre-assembled heatable media line of the present invention having two line connectors attached to the ends of a pipe-type media line and two heating element parts Give,

Fig. 2 shows another arrangement of the two heating element parts disposed along the pipe-type media line 2 and in the two line connectors 3, 4. The heating element portion 50 extends along the fly-type media line 2 and extends to the first line connector 3 and the second line connector 4. The heating element portion 51 extends along only the pipe-type media line 2 and extends beyond the transition regions 20, 21 to the first and second line connectors 3, do. The ends 53, 54 and 55, 56 of the two heating element portions 50, 51 are disposed in the two line connectors 3, 4. Thus, the electrical supply lines 6, 7 may be connected to each of the ends 53, 54 and 55, 56, or the ends 53, 54 and 55, 56 may be short- ). And may be appropriately selected depending on the specific application.

FIG. 3 shows two line connectors attached to the ends of a pipe-type media line and a pre-assembled heatable medium of the present invention having two heating element parts as a variation to the embodiment of FIG. Line of the third embodiment of the present invention,

The embodiment of the pre-assembled heatable match line 1 of Figure 3 shows that the ends 55,56 of the two heating element portions 50,51 are not crimped together at the contacts 52, They are different from the embodiment of FIG. 1 in that they are free to be connected together or connected to the electricity supply lines 6, 7 by being connected together.

In contrast to the embodiment of the pre-assembled heatable media line 1 of Figure 2, the two end portions 53, 54 of the two heating element portions 50, 51, in the variant embodiment of Figure 4, At a contact point 57, for example, at a crimping point. The contact 57 may be disposed in the first line connector 3, or may be disposed in the pipe-type media line 2 as indicated by the dotted line.

Thus, the heating element portion 50 does not extend beyond the transition region 20 (dotted line), or extends beyond the transition region 20 to the first line connector 3 in a very short portion, The one-line connector 3 is hardly heated, and accordingly, is placed in a high-temperature zone of the vehicle, that is, in a zone in which a high ambient temperature is predicted.

In a variant embodiment of the pre-assembled heatable media line 1 according to figure 5, four heating element parts 50, 51, 58 and 59 are provided and two heating element parts 50, 51 Are arranged along the pipe-type media line 2 and are arranged in two transition regions 20, 21; The heating element portion 58 is disposed in the first line connector 3 and the heating element portion 59 is disposed in the second line connector 4. The ends 53, 54, 55, 56 of the heating element portions 50, 51 can be shorted, that is to say the ends 580, 581, 590, 591, or may be connected to electrical supply lines 6, 7 for connection to a power source (not shown).

Fig. 6 shows a further modified embodiment of the pre-assembled heatable media line 1, which is provided with three heating element parts 50, 51 and 58. Fig. The heating element portion 51 extends along the pipe-type media line 2 and extends beyond the transition region 20 to the first line connector 3, as shown in Figure 3, And extends along the second line connector 4. [ The heating element portion 51 in the second line connector 4 may be connected to the heating element portion 50 or may be connected to the electricity supply lines 6 and 7 as shown in FIG. The heating element portion 50 extends along the pipe-type media line 2 and beyond the two transition regions 20,21. The third heating element portion 58 is disposed in the first line connector 3. The third heating element portion 58 is shorted at its ends 580 and 581 to the ends 53 and 54 of the other two heating element portions 50 and 51, 581, 53, 35 may be connected to the electricity supply lines 6, 7.

An alternative embodiment of the pre-assembled heatable media line 1 shown in Fig. 10 is a variation of the embodiment shown in Fig. However, in contrast to the embodiment of FIG. 4, the heating element portion 50 does not extend to the second line connector 4. Rather, even though the two heating element portions 50, 51 extend beyond the transition regions 20, 21, because they extend only to the two line connectors 3, 4 in the short section, The connectors 3 and 4 are not substantially heated. Their ends 53, 54 and 55, 56 may be short-circuited or may be connected to electrical supply lines 6, 7 to be connectable to a power source (not shown). Shown by the dashed line in FIG. 10 is the variant shown in FIG. 4, where the two heating element portions 50, 51 are fixedly connected together at a contact 57 located in the pipe-type media line 2 ; Therefore, the first line connector 3 is not heated. The variations shown in Fig. 10 can be provided, particularly when the entire pre-assembled heatable media line 1 is placed in a high temperature zone where heating of the line connectors 3, 4 is not required.

An alternative embodiment of the pre-assembled heatable media line 1 shown in Figure 11 includes three heating element portions 50,51 and 59, While the two heating element portions 50 and 51 extend along the pipe-type media line 2 and beyond the two transition regions 20 and 21, respectively. The two heating element parts 50 and 51 are joined together at the contacts or crimping points 57 on the first line connector 3 or on the pipe-type media lines 2, as in the case of the embodiment of Fig. It is fixedly connected. The ends 56 and 590, or 55 and 591, of each of the heating element portions 51, 59 and 50 and 59 are shorted or connected to electrical supply lines 6 and 7 (not shown) for the purpose of connecting to a power source .

In the alternative embodiment of the pre-assembled heatable media line 1 shown in Figure 12, two heating elements 50, 51 are provided, the heating element portion 50 is double- laid) extends from the second line connector 4 to the short portion of the first line connector 3 beyond the transition region 21, the pipe-type match line 2 and the transition region 20, Extends back to the second line connector 4 across the transition region 20, the pipe-type media line 2 and the transition region 21, The heating element portion 51 is disposed in the second line connector 4 only. At the ends 53, 54 and 55, 56 disposed in the second line connector 4, the heating element portions 50, 51 can be connected together, that is to say they can be short-circuited, (Not shown) to be connected to the electrical supply lines 6, 7. The dotted line in Fig. 12 shows a variant in which the heating element portion 50 does not extend into the transition region 20 or into the first line connector 3. Where the first line connector 3 and the transition region 20 to the first line connector are not heated. In two variations, the first line connector 3 can be placed in the hot zone of the vehicle, while the second line connector 4 can be heated and accordingly placed in the low temperature zone.

Figures 7 and 8 show longitudinal cross-sectional views in the area of the line wall 22 of the pipe-type media line 2 and in each case on the outer surface of the line wall 22, A turn of the heating element part 5 or of the heating element part is arranged which is attached by means of a fixing tape 23, for example a fabric-, adhesive- or fabric adhesive tape, or a film element. The difference between Figures 7 and 8 is that the two pre-assembled heating elements 5 shown in these figures simply have different outer diameters (d ₅ ). Modular heating element 5 or the heating element portion of the outer diameter (d _5b) pre-assembled heating element 5 or by heating a smaller outer diameter than the element portion having the shown in Figure 8 (d _5a - pre shown in Figure 7 ). Smaller outside diameter (d _5a) pre shown in Figure 7 with - the better the heat input to the assembly-type heating element (5) is provided, the pre-assembled heating element (5) or a heating element small amounts in the cross-sectional area of the portion Can be dispersed. This can also be seen, for example, from a cross-section through the external rib structure of the first or second line connector 3, 4 shown in Fig. The pre-assembled heating element 5 or its heating element portion is disposed in the groove 30 between the two ribs 31, 32 of the first line connector 3. The optimum outer diameter (d ₅ ) of the pre-assembly type heating element 5 or the heating element part leads to an optimum arrangement in the groove 30, and thus leads to particularly good heat transfer.

Figure 15 shows a pipe-type media line (2) with two heating element portions (50, 51) wrapped around the media line. The two heating element portions 50, 51 are wound alternately with each other, as shown in the side view of the media line 2 in Fig. 16, the fixing tape may be composed of at least one film element 123 for fixing two heating element parts 50, 51 to the outer surface of the medium line 2. [ The film elements are indicated by dotted lines in Fig. 16 with overlapping turns. 16, the film element is wrapped around the two heating element portions 50, 51 in the opposite direction of the heating element portions 50, 51, It wraps around. For the purpose of fixing, it is sufficient to provide section-by-section winding with at least one film element 123. The film element 123 may be oriented in the same winding direction as the heating element portions 50, 51. By heating the media line and the at least one film element 123 with the heating element portions 50 and 51 disposed in the media line, the film element 123 is separated into two heating element portions 50 and 51, Is relaxed and contracted to be particularly hard to apply to the outer surface of the line (20). By this means, particularly good fixing and tight positioning of the heating element parts in the media line is possible, so that particularly good heating of the medium line 2 by the two heating element parts 50, 51 is possible. At least one film element 123 is wound around the media line and the heating element parts or heating elements 5 when winding on the media line 2 having the heating element parts 50, 51 or the at least one heating element 5, And / or are plastically deformed, and / or excessively elongated, and / or plastically deformed, in order to achieve particularly good placement on the substrate.

The following tables show that the heating element portions 50, 51 of the pre-assembled heating elements 5 shown in the various embodiments shown in Figures 1-6, 10-12, 15, Shows possible materials for individual wires. As shown in FIGS. 13 and 14, when the seven individual wires are twisted around the support element 150 of high tensile strength, the following materials listed in Table 1 may be used, for example, . In Table 1, five different examples 1 to 5 are shown in rows for different resistance per unit length R that can be achieved with a combination of individual wires made of the respective cited materials. Here, one of the individual wires is a support element with a high tensile strength, for example the wire 7 is a support element 150 of high tensile strength.

Wire 1 Wire 2 Wire 3 Wire 4 Wire 5 Wire 6 Wire 7 R
[Ω / m] material material material material material material material One 0.097 Cu Cu Cu Cu Cu CuNi1 CuNi1 2 0.119 Cu Cu Cu CuNi1 CuNi1 CuNi1 CuNi6 3 0.436 CuNi2 CuNi2 CuNi6 CuNi6 CuNi6 CuNi10 CuNi10 4 2.658 CuNi30Mn CuNi44 CuNi44 CuNi44 CuNi44 CuNi44 NiCr3020 5 4.651 CuNi44 NiCr3020 NiCr3020 NiCr3020 NiCr3020 NiCr3020 NiCr3020

Table 2 below shows the results of the heating with seven twisted individual wires for eight examples 1 to 8 of resistance R per different unit length that can be achieved with a combination of discrete wires made of the respective cited materials Examples of materials for the individual wires of the element portion are listed.

Wire 1 Wire 2 Wire 3 Wire 4 Wire 5 Wire 6 Wire 7 R
[Ω / m] material material material material material material material One 0.131 Cu Cu Cu CuNi1 CuNi2 CuNi2 CuNi2 2 0.145 CuNi1 CuNi1 CuNi1 CuNi1 CuNi1 CuNi1 CuNi6 3 0.177 CuNi1 CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 CuNi15 4 0.198 CuNi1 CuNi1 CuNi1 CuNi1 CuNi6 CuNi10 CuNi10 5 0.218 CuNi1 CuNi1 CuNi2 CuNi2 CuNi2 CuNi2 CuNi10 6 0.242 CuNi1 CuNi2 CuNi2 CuNi2 CuNi2 CuNi2 CuNi6 7 0.326 CuNi2 CuNi2 CuNi2 CuNi2 CuNi2 CuNi10 CuNi15 8 0.397 CuNi2 CuNi2 CuNi2 CuNi6 CuNi6 CuNi10 CuNi15

Table 3 below shows the results of the heating with 19 twisted individual wires for five examples (1-5) of resistance R per different unit length that can be achieved with a combination of discrete wires made of the respective cited materials Shows possible materials for the individual wires of the element part.

Example 1 Example 2 Example 3 Example 4 Example 5 R [? / M] 0.131 0.145 0.162 0.177 0.198 Wire 1 material Cu CuNi1 Cu CuNi1 CuNi1 Wire 2 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 3 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 4 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 5 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 6 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 7 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 8 material CuNi1 CuNi1 GuNi1 CuNi1 CuNi1 Wire 9 material CuNi1 CuNi1 CuNi1 CuNi1 CuNi1 Wire 10 material CuNi1 CuNi1 CuNi1 CuNi1 CuNi1 Wire 11 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi1 Wire 12 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 13 material CuNi1 CuNi1 CuNi2 CuNi2 CuNi10 Wire 14 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi10 Wire 15 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi10 Wire 16 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi10 Wire 17 material CuNi2 CuNi2 CuNi2 CuNi2 CuNi10 Wire 18 material CuNi2 CuNi2 CuNi6 CuNi2 CuNi10 Wire 19 material CuNi6 CuNi6 CuNi6 CuNi10 CuNi15

The following Table 4 shows the results of heating with 37 twisted individual wires for five examples (1-5) of resistance R per different unit length, which can be achieved with a combination of individual wires made of the respective quote materials Shows possible materials for the individual wires of the element part.

Example 1 Example 2 Example 3 Example 4 Example 5 R [? / M] 0.131 0.145 0.162 0.177 0.198 Wire 1 material Cu Cu Cu CuNi1 CuNi1 Wire 2 material Cu CuNi1 Cu CuNi1 CuNi1 Wire 3 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 4 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 5 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 6 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 7 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 8 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 9 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 10 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 11 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 12 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 13 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 14 material Cu CuNi1 CuNi1 CuNi1 CuNi1 Wire 15 material CuNi1 CuNi1 CuNi1 CuNi1 CuNi2 Wire 16 material CuNi1 CuNi1 CuNi1 CuNi1 CuNi2 Wire 17 material CuNi1 CuNi1 CuNi1 CuNi1 CuNi2 Wire 18 material CuNi1 CuNi1 CuNi1 CuNi1 CuNi2 Wire 19 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 20 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 21 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 22 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 23 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 24 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 25 material CuNi1 CuNi1 CuNi1 CuNi2 CuNi2 Wire 26 material CuNi1 CuNi1 CuNi2 CuNi2 CuNi2 Wire 27 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi2 Wire 28 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi2 Wire 29 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi2 Wire 30 material CuNi2 CuNi1 CuNi2 CuNi2 CuNi2 Wire 31 material CuNi2 CuNi2 CuNi2 CuNi2 CuNi2 Wire 32 material CuNi2 CuNi2 CuNi6 CuNi2 CuNi2 Wire 33 material CuNi2 CuNi2 CuNi6 CuNi2 CuNi2 Wire 34 material CuNi6 CuNi2 CuNi6 CuNi2 CuNi2 Wire 35 material CuNi6 CuNi2 CuNi10 CuNi2 CuNi6 Wire 36 material CuNi6 CuNi2 CuNi10 CuNi2 CuNi6 Wire 37 material CuNi6 CuNi6 CuNi10 CuNi2 CuNi10

For example, a plastic profile or individual wires can be used as a high tensile strength member 150 or a high tensile strength core of each heating element portion, so that in the latter case the material of the high tensile strength support element is shown in Tables 1 - 4 < / RTI > In the latter case, one of the individual wires is arranged inside as a support element of high tensile strength, and the other six individual wires are twisted around one individual wire disposed therein, The cross-section of the penetration is different from that shown in Fig. The individual wires may all have the same outer diameter.

Below, an example of a design for a pre-assembled heatable media line with two line connectors 3, 4 is described, the structure of which is shown in Figures 1 to 4, 10 to 12 Two heating element parts 50 and 51 are provided and each heating element part 50 and 51 is extended along a pipe-type media line 2, in other words, And is used for one of the two line connectors 3 and 4 as shown in FIG.

Table 5 below contains the specifications of the pre-assembled media lines and the specifications of the two different variants I and II are compared with each other.

A media line having two line connectors,
2-wire strand design  I  Ⅱ In the line connector 3
Required power output
1.2
W
1.2
W On the line connector 3,
Defined as the travel distance,
The line connector 3
Exemplary heating element length



400.0



mm



400



mm In the line connector 4
Required power output
1.8
W
1.8
W On the line connector 4,
Defined as the travel distance,
The line connector 4,
Exemplary heating element length



400



mm



400



mm Power output required for media line (pipeline)

12.5

W / M

12.5

W / M Media line
Exemplary pipe diameter
4.05
mm
4.05
mm Exemplary nominal operating voltage

13.5

V

13.5

V Exemplary Media Line Length
4.700
mm
4.700
mm For 1 meter
Default line length
1,000
mm
1,000
mm

Table 6 below illustrates the diameters of the composite wire strands of the present invention and exemplary preferred cross-sectional areas thereof.

Of composite wire strand
diameter
1.10
mm Preferred reduced
Sectional area
0.20
mm ²

The following values from Tables 5 and 6 are reproduced in Tables 7 to 13 and will be described in more detail later, and the values contained in Table 7 apply to Modifications I and II from Tables 5 and 6, The values contained in Table 9 apply to Modification Example II, the values contained in Table 10 apply to Modification I, and the values contained in Table 11 apply to Modification Example II , The values included in Table 12 apply to Modification I, and the values contained in Table 13 apply to Modification II.

For the line connector 3
Required heating element power output
3
W / m The power on the line connector 3
Calculated from the length of the line connector 3 For the line connector 4
Required heating element power output
4.5
W / m The power on line connector 4
Calculated from the length of the line connector 4 On the media line
Length required per heating element
1.67
M Power output requirement of media line /
Calculated from the power output of the two wire strands or heating element parts On pipeline / media line
Pitch of heating elements
12
mm Length is calculated from the length of the heating element required for a 1,000-mm, 1-meter media line, and the diameter of the media line and heating element. The total length of the first heating element to be used for the line connector 3 (QC1)


8,233


mm Length of heating element for media line length
+ Length at QC1 The total length of the first heating element to be used for the line connector 4 (QC2)


8,233


mm Length of heating element for media line length
+ Length at QC2 The first heating element
Power output
25
The length x of the first heating element
The power related to this heating element The second heating element
Power output 37
The length x of the first heating element
The power related to this heating element Total power output generated 61.8 . W Sum of two heating element power outputs Required current 4.57 A Power Output / Voltage By the first heating element
Resistance to be generated 1.18
Ohm
I = P / I ² By the second heating element
Resistance to be generated 1.77
Ohm
I = P / I ² Total resistance 2.95 Ohm Generated by two heating elements
Media Line Resistance

The required first heating element
Resistivity
0.143
Ohm / m The resistance of the first heating element
Calculated from the length to be used The required second heating element
Resistivity 0.215
Ohm / m The resistance of the second heating element
Calculated from the length to be used

The required first heating element
Resistivity
0.215
Ohm / m The resistance of the first heating element
Calculated from the length to be used The required second heating element
Resistivity 0.358
Ohm / m The resistance of the second heating element
Calculated from the length to be used

For the first heating element,
Possible cross-sectional area
0.119
mm ²
with
Cu With only one ingredient
Made For the first heating element,
Possible cross-sectional area
0.174
mm ²
with
CuNi 1 With only one ingredient
Made For the first heating element,
Possible cross-sectional area
0.349
mm ²
with
CuNi 2 With only one ingredient
Made For the second heating element,
Possible cross-sectional area
0.116
mm ²
with
CuNi 1 With only one ingredient
Made For the second heating element,
Possible cross-sectional area
0.232
mm ²
with
CuNi 2 With only one ingredient
Made For the second heating element,
Possible cross-sectional area
0.465
mm ²
with
CuNi 6 With only one ingredient
Made

For the first heating element,
Possible cross-sectional area
0.116
mm ²
with
CuNi 1 With only one ingredient
Made For the first heating element,
Possible cross-sectional area
0.232
mm ²
with
CuNi 2 With only one ingredient
Made For the first heating element,
Possible cross-sectional area
0.465
mm ²
with
CuNi 6 With only one ingredient
Made For the second heating element,
Possible cross-sectional area
0.139
mm ²
with
CuNi 2 With only one ingredient
Made For the second heating element,
Possible cross-sectional area
0.279
mm ²
with
CuNi 6 With only one ingredient
Made For the second heating element,
Possible cross-sectional area
0.418
mm ²
with
CuNi 10 With only one ingredient
Made

First heating with 0.20 mm ²
Resistance of element part (wire strand)

0.145

Ohm / m

with
6xCuNi 1
1xCuNi 6 Second heating with 0.20 mm ²
Resistance of element part (wire strand)


0.218


Ohm / m


with
4xCuNi 2
2xCuNi 1
1xCuNi 10

First heating with 0.20 mm ²
Resistance of element part (wire strand)

0.218

Ohm / m

with 4xCuNi 2
2xCuNi 1
1xCuNi 10 Second heating with 0.20 mm ²
Resistance of element part (wire strand)


0.358


Ohm / m


with 4xCuNi 2
1xCuNi 6
1xCuNi 10
1xCuNi 15

Table 14 below shows the specific resistivity of each of the materials cited in the tables above.

material /
alloy
material
Resistivity [Ohm * mm ² / m] Cu 0.017 CuNi 1 0.025 CuNi 2 0.050 CuNi6 0.100 CuNi 10 0.150 CuNi 15 0.210 CuNi 23 0.300 CuNi 30 0.400 CuNi 44 0.490 NiCr3020 1.040

The power P ₃ required for the first line connector 3 is, for example, P ₃ = 1.2W. The length l ₃ of the exemplary heating element portion fixed on the line connector 3, which is predetermined by the movement in the rib on the outer surface of the line connector ₃ , is l ₃ = 400.00 mm . The power P ₄ required for the second line connector 4 is, for example, P ₄ = 1.8W. Length (l ₄₎ of an exemplary heating element portion fixed to the said line connector (4) is predetermined by the movement in the rib on the outer surface of the line connector (4) is a, l ₄ = 400.00mm . The power P ₂ required for the pipe-type media line 2 is, for example, P ₂ = 12.5 W, and the media line diameter d ₂ is, for example, d ₂ = 4.05 mm. An exemplary minimum operating voltage U is U = 13.5V. The line length L is, for example, L = 4,700 mm, and the basic line length for 1 meter is 1,000 mm.

The composite wire strands of the heating element is designed as part (mixed wire strands) diameter (d _50,51) (50, 51), _50,51 d = 1.10mm (= strand wire diameter, including insulation) and is to be , a preferred cross-sectional area (a _50,51) is, a = _50,51 0.20㎟. The cross-sectional area is the cross-sectional area of the metal portions of the individual wires, i.e., the cross-sectional area excluding the insulation coating.

From this, the (partial) heating element power P ₅₀ for the first line connector ₃ is greater than the length (l ₃ ) of the heating element portion 50 on the first line connector to the first line connector 3) it is calculated from the power (P ₃₎ on a P ₅₀ = 3W / m.

The (partial) heating element power P ₅₁ for the second line connector ₄ is the sum of the power (in terms of power) about the second line connector 3 relative to the length 14 of the heating element portion on the second line connector P ₄ ), and P ₅₁ = 4.5 W / m. Required length (l) heating elements per section on the medium line (2), of two to the power of the two heating element portions _{(50, 51) (P 50} , P 51) line power (P ₂₎ to the sum of , And l = 1.67 m. The required pitch of the heating element parts 50, 51 on the pipe-type media line 2 is determined by the basic line length of 1,000 mm, the length I required per heating element part on the 1 meter line, (D ₂ , d _{50, 51} ) of the heating element portions 50, 51 designed as a type of media line 2 and composite wire strands, and s = 12 mm. The total length L _50ges to be used for the heating element portion 50 (on the line connector 3) is determined by the length of the heating element portion 50 for wrapping the pipe-type media line 2 l, the length L of the line and the length L ₃ of the line connector 3, and L _50ges = 8,233 mm. The total length L _51ges to be used for the heating element portion 51 (on the line connector 4) is the length l of the heating element portion 51 for surrounding the pipe-type media line 2, The length L of the line and the length L ₄ of the line connector 4, and L _51ges = 8,233 mm.

The power P _50ges to be generated in the heating element portion 50 is calculated from the length L _50ges of the heating element portion 50 multiplied by the power P ₅₀ with respect to the heating element portion 50, _50ges = 25W. The power P _51ges to be generated in the heating element portion 51 is caused by the length L _51ges of the heating element portion 50 multiplied by the power P ₅₁ relating to the heating element portion 51, _51ges = 37W. The total power of the two heating element parts 50, 51 is calculated from the sum of the two powers P _50ges and P _51ges , and P _{50, 51ges} = 61.8W. Therefore, the required current I is I = 4.57A. From this, the resistance R ₅₀ to be generated by the heating element part 50 is calculated from the power P _50ges to the square of the current I, and R ₅₀ = 1.18?; The resistance R ₅₁ to be generated by the heating element portion 51 is calculated from the power P _51ges for the square of the current I and R ₅₁ = 1.77? Therefore, the sum of the resistors (R ₅₀ and R ₅₁₎ is, R _50,51 = 2.95Ω. The required resistance R _L50 per unit length of the heating element portion 50 is calculated from the resistance R ₅₀ and the heating element part length L _50ges to be used and R _L50 = 0.143? / M. The required resistance R _L51 per unit length of the heating element portion 51 is calculated from the resistance R ₅₁ and the heating element part length L _51ges to be used and R _L51 = 0.215? / M.

This allows the possible cross-sectional area (A ₅₀ ) for the heating element portion 50 to be A ₅₀ = 0.119 mm 2 when the heating element portion 50 is made of only one material, here Cu, or only one Material, where A ₅₀ = 0.174 mm 2 when made of CuNi 1, or A ₅₀ = 0.349 mm 2, when made of only one material, here CuNi 2. This allows the possible cross-sectional area A ₅₁ for the heating element portion 51 to be A ₅₁ = 0.116 mm 2, or only one Material, where A ₅₁ = 0.232 mm 2 when made of CuNi 2, or A ₅₁ = 0.465 mm 2 when made of only one material, here CuNi ₆ . Thus, the first and second designs for the first heating element portion 50 may be too small, and the third design may mean too high material consumption. For the second heating element portion 51, the first design may be too small, and the two designs cited at the end, or at least the final design, may lead to too high material consumption and thus lead to an increase in cost have. In addition, the outer diameter, including insulation, can be too large, so that insertion into a tight protective cover, such as a narrow insulating tube, e.g., a corrugated tube, becomes impossible and thus a larger protective cover diameter or tube diameter .

Thus, the two heating element portions 50, 51 are designed as composite wire strands in accordance with the present invention. Here, when using seven twisted individual wires comprising six CuNi 1 and one CuNi 6, the resistance R _50/20 per unit length of the heating element portion 50 with a cross-sectional area A ₅₀ = 0.20 mm 2 , For example, R _50/20 = 0.145? / M. Per unit length of the heating element portion 51 designed as a composite wire strand having a cross-sectional area A ₅₁ = 0.20 mm < 2 &_gt; when using seven twisted individual wires comprising four CuNi2 and two CuNi1 and one CuNi10, The resistance R _51/20 is, for example, R _51/20 = 0.218? / M. Needless to say, a combination of different materials of the individual wires is also possible, in order to achieve a heating element portion with the desired specific resistance in a predetermined cross-sectional area of the heating element portion. In particular, copper-zinc alloys or copper-tin alloys may be used for one or more of the individual wires. Sectional area of 0.19 ² * pi / 4 = 0.028 mm ² per individual wire, in the case of seven individual wires with an outer diameter of the metal part of 0.19 mm, without insulation sheath, 0.028 mm 2 x 7 = 0.2 mm 2. Thus, having a heating element portion of a cross-sectional area or cross-section of a predefined or predefined cross-section, e.g., 0.2 mm2, will have the desired resistance by the proper selection of individual wires in the mixing of the individual wires It is possible to select or configure.

It is possible to adjust the overall resistance of the pre-assembled heating element by using the composite wire strand as the heating element portion and suitably connecting the at least two heating element portions in series to form the pre-assembled heating element , Whereby the heat output over a range of pre-assembled heatable media lines can be optimally adjusted for a particular application and, therefore, only within those areas where only a small heat output is required , Whereas in zones where a high heat output is required to thaw the frozen media in the pre-assembled heatable media line or to prevent the media from freezing, a suitably high heat output is provided .

In addition to the variations of pre-assembled heatable media lines and pre-assembled heating elements cited above and shown in the drawings, any combination of many different combinations and features cited may be provided At least one line connector disposed at an end of the media line, and at least one pre-assembled heating element, wherein at least one of the at least two heating elements Which are connected to at least one circuit and at least one of the heating element portions is formed as a composite wire strand having a plurality of twisted individual wires of at least two different materials.

1. Pre-assembled heatable media line
2. Pipe-type media lines
3. Line connector
4. Line connector
5. Pre-assembled heating element
6. Electric supply line
7. Electric supply line
20. Transition area
21. Transition area
22. Line wall
23. Fixed tape
30. Home
31. Rib
32. Rib
50. Heating Element Portion
51. Heating Element Portion
52. Contact / crimping point
53. End of 50
54. End of 51
55. End of 50
56. End of 51
57. Contact / crimp point
58. Heating element part
59. Heating element part
123. Film elements
150. Support element with high tensile strength / Core with high tensile strength
151. Individual wires
152. Individual wire
153. Individual wires
154. Individual wires
155. Individual wires
156. Individual wires
157. Individual wires
158. Protective Cloth
580. End of 58
581. End of 58
590. End of 59
591. End of 59
ℓ _s Twist Length
d ₅ 5 outside diameter
d _5a Outer diameter of 5
d _5b Outer diameter of 5

Claims (12)

At least one line connector (3, 4) arranged at an end of the media line (2), and at least one dictionaries - a pre-fabricated heatable media line (1) with an assembled heating element (5)
The pre-assembled heating element (5) comprises at least two heating element parts (50, 51, 58, 59) connected in at least one circuit, and at least one of the heating element parts One for the purpose of heating at least a part of said at least one line connector (3, 4) and said at least one pipe-type and / or hose type of media line (2) , 4) and the media line (2) of said at least one pipe-type and / or hose type,
At least one of the heating element portions (50,51,58,59) having a plurality of twisted individual wires (151,152,153,155,156,157) of at least two different materials A pre-assembled heatable media line, characterized in that it is configured as a mixed wire strand. The method according to claim 1,
Wherein the two heating element portions (50, 51, 58, 59) connected together have the same cross-sectional area. 3. The method according to claim 1 or 2,
Characterized in that the two interconnecting heating element parts (50, 51, 58, 59) each have a minimum cross-sectional area of 0.15 mm 2, in particular a cross-sectional area of 0.2 mm 2. 4. A method according to one of the preceding claims,
Characterized in that said at least one pipe-type and / or hose-type media line (2) and said at least one line connector (3, 4) are adaptively surrounded by said at least one pre- Pre-assembled heatable media line. 4. A method according to one of the preceding claims,
Wherein at least one of the twisted individual wires (151, 152, 153, 154, 155, 156, 157) of the at least one heating element portion (50, 51, 58, 59) is a copper-zinc alloy or a copper- ≪ / RTI > wherein the pre-assembled heatable medium line is a pre-assembled heatable medium. 4. A method according to one of the preceding claims,
Characterized in that the pre-assembled heating element (5) comprises two or three heating element parts (50, 51, 58, 59). 4. A method according to one of the preceding claims,
Characterized in that the at least one heating element portion (50,51,58,59) is configured as a composite strand comprising seven twisted discrete wires (151,152,153,155,156,157) Pre-assembled heatable media line. 4. A method according to one of the preceding claims,
In order to form the at least one heating element portion (50,51, 58,59) by twisting the individual wires (151,152,153,155,156,157), a lay length ( RTI ID = 0.0 > ls < / RTI > is 6 to 15 mm, especially 9 mm. A pre-assembled heating element (5) for use in a pre-assembled heatable media line (1) according to one of the preceding claims,
The pre-assembled heating element 5 comprises at least two series-connected heating element parts 50, 51, 59, 59,
At least one of the heating element portions (50,51,58,59) having a plurality of twisted individual wires (151,152,153,155,156,157) of at least two different materials Pre-assembled heating elements, characterized in that they are constructed as composite wire strands. 10. The method of claim 9,
Characterized in that said at least one heating element part (50, 51, 58, 59) constituted as a composite wire strand has a cross-sectional area of 0.15 to 0.37 mm 2, in particular of 0.17 to 0.23 mm 2, Pre-assembled heating elements. A method for fixing at least one pre-assembled heating element (5) according to one of claims 9 or 10 to a media line (2) for the purpose of forming a heatable media line ,
Characterized in that the at least one pre-assembled heating element (5) and at least one pipe-type and / or hose-type media line (2) with at least one pre- Wherein at least one film element (123) is at least partially wrapped around at least one film element (123) around the media line (2) with a pre-assembled heating element (5) Wherein the media line (2) with the at least one pre-assembled heating element (5) and the at least one film element (123) are arranged in the film element (123) Is heated for better embedding of the element (5) and better placement of the film element (123) on the outer surface of the media line (2). 12. The method of claim 11,
The at least one film element 123 is stretched and / or stretched while winding the media line 2 with the at least one heating element 5 disposed on the media line 2, Or excessively extended, and / or plastically deformed.

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